Do your eyes ever change colour? Apart from red when you wake up with a hangover that is?
I was just talking to my kids over lunch about eyes and I noticed that my son (now 10) who had the most piercing blue eyes as a kid has now got almost brown eyes (he wears tinted glasses most of the time so I never noticed when it changed till now) he has very poor eyesight and I was wondering how normal this colour change is and why does it happen?